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authorElena Reshetova <elena.reshetova@intel.com>2017-02-21 17:35:03 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-03-03 19:07:16 -0300
commit364fed351369e0193244fa2c78df855724cdddb9 (patch)
tree3faaba005e3cabb4e202832568c4645e436e32a6 /tools/perf/util/thread_map.h
parente34f5b11cd51fbe723e481c1db03a77260be6f4c (diff)
perf thread_map: Convert thread_map.refcnt from atomic_t to refcount_t
The refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Kook <keescook@chromium.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Windsor <dwindsor@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hans Liljestrand <ishkamiel@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kees Kook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: alsa-devel@alsa-project.org Link: http://lkml.kernel.org/r/1487691303-31858-10-git-send-email-elena.reshetova@intel.com [ Did missing tests/thread-map.c conversion ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/thread_map.h')
-rw-r--r--tools/perf/util/thread_map.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/util/thread_map.h b/tools/perf/util/thread_map.h
index ea0ef08c6303..bd34d7a0b9fa 100644
--- a/tools/perf/util/thread_map.h
+++ b/tools/perf/util/thread_map.h
@@ -3,7 +3,7 @@
#include <sys/types.h>
#include <stdio.h>
-#include <linux/atomic.h>
+#include <linux/refcount.h>
struct thread_map_data {
pid_t pid;
@@ -11,7 +11,7 @@ struct thread_map_data {
};
struct thread_map {
- atomic_t refcnt;
+ refcount_t refcnt;
int nr;
struct thread_map_data map[];
};